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STUDY * USA - Larger Trucks More Efficient, Reduce Emissions
The use of heavier trucks can be an effective way for the industry to reduce fuel consumption and emissions, a new study by the American Transportation Research Institute said
Arlington,VA,USA -Transport Topics, by Sean McNally -April 14, 2008: -- “The estimated fuel efficiency improvements found in this study translate directly into equivalent percentage improvements . . . of CO2 emitted,” the report said... "As we look for ways to reduce congestion and greenhouse gas emissions, without sacrificing the supply chain efficiencies that the trucking industry supports, higher productivity vehicles should be considered as a viable part of an overarching solution,” said Doug Duncan, president of FedEx Freight and ATRI chairman... ATRI’s study looked at the performance of six different vehicle combinations: a five-axle tractor-trailer, a five-axle double, a six-axle tractor-trailer, a Rocky Mountain double, a triple and a turnpike double... “Operating vehicles at higher [weights] may require the use of larger engines which, combined with the additional weight, decreases fuel economy on a miles-per-gallon basis,” the report said, but the smaller number of trips would more than offset that disadvantage... For example, the five-axle tractor trailer and the double hauling 80,000 pounds both averaged 5.4 mpg in the study, while the six-axle truck weighing 97,000 pounds averaged 4.9 mpg. The triple, according to ATRI, got 3.8 mpg when hauling 140,000 pounds... The report said that moving a 1,000-ton shipment 500 miles would consume 3,889 gallons of fuel and take 42 trips if hauled by a standard five-axle truck weighing 80,000 pounds. However, the same shipment sent using a Rocky Mountain double weighing 120,000 pounds would burn 3,215 gallons of fuel, making just 27 trips...(Bob Schatz for TT) Labels: study
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